Sustained conscious access to incidental memories in RSVP

Julian Matthews, Jamin Wu, Vanessa Corneille, Jakob Hohwy, Jeroen van Boxtel, Naotsugu Tsuchiya

Research output: Contribution to journalArticle

Abstract

In visual search of natural scenes, differentiation of briefly fixated but task-irrelevant distractor items from incidental memory is often comparable to explicit memorization. However, many characteristics of incidental memory remain unclear, including the capacity for its conscious retrieval. Here, we examined incidental memory for faces in either upright or inverted orientation using Rapid Serial Visual Presentation (RSVP). Subjects were instructed to detect a target face in a sequence of 8–15 faces cropped from natural scene photographs (Experiment 1). If the target face was identified within a brief time window, the subject proceeded to an incidental memory task. Here, subjects used incidental memory to discriminate between a probe face (a distractor in the RSVP stream) and a novel, foil face. In Experiment 2 we reduced scene-related semantic coherency by intermixing faces from multiple scenes and contrasted incidental memory with explicit memory, a condition where subjects actively memorized each face from the sequence without searching for a target. In both experiments, we measured objective performance (Type 1 AUC) and metacognitive accuracy (Type 2 AUC), revealing sustained and consciously accessible incidental memory for upright and inverted faces. In novel analyses of face categories, we examined whether accuracy or metacognitive judgments are affected by shared semantic features (i.e., similarity in gender, race, age). Similarity enhanced the accuracy of incidental memory discriminations but did not influence metacognition. We conclude that incidental memory is sustained and consciously accessible, is not reliant on scene contexts, and is not enhanced by explicit memorization.

Original languageEnglish
Pages (from-to)188-204
Number of pages17
JournalAttention, Perception, and Psychophysics
Volume81
Issue number1
DOIs
Publication statusPublished - 2018
Externally publishedYes

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Semantics
Area Under Curve
experiment
semantics
Conscious
discrimination
gender
performance
Experiment
Distractor
Memorization
time
Metacognition
Discrimination (Psychology)
Visual Search
Discrimination
Semantic Features
Coherency

Cite this

Matthews, Julian ; Wu, Jamin ; Corneille, Vanessa ; Hohwy, Jakob ; van Boxtel, Jeroen ; Tsuchiya, Naotsugu. / Sustained conscious access to incidental memories in RSVP. In: Attention, Perception, and Psychophysics. 2018 ; Vol. 81, No. 1. pp. 188-204.
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Sustained conscious access to incidental memories in RSVP. / Matthews, Julian; Wu, Jamin; Corneille, Vanessa; Hohwy, Jakob; van Boxtel, Jeroen; Tsuchiya, Naotsugu.

In: Attention, Perception, and Psychophysics, Vol. 81, No. 1, 2018, p. 188-204.

Research output: Contribution to journalArticle

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AU - Hohwy, Jakob

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AU - Tsuchiya, Naotsugu

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